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Measurement and simulation of anisotropy in the Infrared and Raman spectra of beta-FeSi2 single crystals

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In this paper we show that the orthorhombic phase of FeSi2 (stable at room temperature) displays a sizable anisotropy in the infrared spectra, with minor effects in the Raman data too. This fact is not trivial at all, since the crystal structure corresponds to a moderate distortion of the fluorite symmetry. Our analysis is carried out on small single crystals grown by flux transport, through polarization-resolved far-infrared reflectivity and Raman measurements. Their interpretation has been obtained by means of the simulated spectra with tight-binding molecular dynamics.

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Reproducció digital del document publicat en format paper, proporcionada per PROLA i http://dx.doi.org/10.1103/PhysRevB.55.14290

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Articles publicats en revistes (Enginyeria Electrònica i Biomèdica)

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Measurement and simulation of anisotropy in the Infrared and Raman spectra of beta-FeSi2 single crystals